# Calculate the radiation dosage (in grays) for a 79 kg person that is exposed for 7.0 seconds to a...

## Question:

Calculate the radiation dosage (in grays) for a 79 kg person that is exposed for 7.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and each beta particle has an energy of {eq}2.0 \times 10^{-13} {/eq} J.

The term "radiation" may be described as the method by which energy is released from a source and propagated within a surrounding medium. Radiation is the only kind of heat transfer method that can occur in a vacuum.

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Given values:

• The mass of the person is {eq}m = 79\;{\rm{kg}} {/eq}.
• The time of exposure is {eq}\Delta t = 7.0\;{\rm{s}} {/eq}.
• The activity...